Miller Dam, located in Jefferson County, Iowa, is a privately owned structure designed by the USDA NRCS for fire protection, stock, and small fish pond purposes. Completed in 1963, this earth dam stands at a height of 20 feet and spans 350 feet, with a storage capacity of 120 acre-feet. Situated on Shirtz Creek, a tributary of Big Cedar Creek, the dam serves as a vital resource for water management in the region.

Managed by the Iowa Department of Natural Resources, Miller Dam is regulated, inspected, and enforced to ensure its integrity and safety. With a low hazard potential and a condition assessment of "Not Rated," the dam plays a crucial role in protecting the surrounding environment and enhancing water security for the community. Despite not having a spillway or outlet gates, the dam continues to provide essential services while meeting state permitting and inspection requirements.

As a key feature in the local landscape, Miller Dam underscores the importance of sustainable water resource management and climate resilience. With its historical significance and functional design, the dam serves as a testament to the collaborative efforts of government agencies and private owners in safeguarding water resources for future generations.